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be0e2d3e HZ |
1 | /* |
2 | * Regulators driver for Marvell 88PM8607 | |
3 | * | |
4 | * Copyright (C) 2009 Marvell International Ltd. | |
5 | * Haojian Zhuang <haojian.zhuang@marvell.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | #include <linux/kernel.h> | |
12 | #include <linux/init.h> | |
13 | #include <linux/err.h> | |
53dbab7a | 14 | #include <linux/i2c.h> |
be0e2d3e HZ |
15 | #include <linux/platform_device.h> |
16 | #include <linux/regulator/driver.h> | |
17 | #include <linux/regulator/machine.h> | |
53dbab7a | 18 | #include <linux/mfd/88pm860x.h> |
be0e2d3e HZ |
19 | |
20 | struct pm8607_regulator_info { | |
21 | struct regulator_desc desc; | |
53dbab7a | 22 | struct pm860x_chip *chip; |
be0e2d3e | 23 | struct regulator_dev *regulator; |
53dbab7a | 24 | struct i2c_client *i2c; |
be0e2d3e | 25 | |
9f79e9db HZ |
26 | unsigned int *vol_table; |
27 | unsigned int *vol_suspend; | |
28 | ||
be0e2d3e HZ |
29 | int vol_reg; |
30 | int vol_shift; | |
31 | int vol_nbits; | |
32 | int update_reg; | |
33 | int update_bit; | |
34 | int enable_reg; | |
35 | int enable_bit; | |
36 | int slope_double; | |
37 | }; | |
38 | ||
9f79e9db HZ |
39 | static const unsigned int BUCK1_table[] = { |
40 | 725000, 750000, 775000, 800000, 825000, 850000, 875000, 900000, | |
41 | 925000, 950000, 975000, 1000000, 1025000, 1050000, 1075000, 1100000, | |
42 | 1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000, | |
43 | 1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000, | |
44 | 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000, | |
45 | 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000, | |
46 | 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000, | |
47 | 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000, | |
48 | }; | |
be0e2d3e | 49 | |
9f79e9db HZ |
50 | static const unsigned int BUCK1_suspend_table[] = { |
51 | 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000, | |
52 | 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000, | |
53 | 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000, | |
54 | 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000, | |
55 | 800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000, | |
56 | 1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000, | |
57 | 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000, | |
58 | 1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000, | |
59 | }; | |
60 | ||
61 | static const unsigned int BUCK2_table[] = { | |
62 | 0, 50000, 100000, 150000, 200000, 250000, 300000, 350000, | |
63 | 400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000, | |
64 | 800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000, | |
65 | 1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000, | |
66 | 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000, | |
67 | 2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000, | |
68 | 2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000, | |
69 | 2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000, | |
70 | }; | |
71 | ||
72 | static const unsigned int BUCK2_suspend_table[] = { | |
73 | 0, 50000, 100000, 150000, 200000, 250000, 300000, 350000, | |
74 | 400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000, | |
75 | 800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000, | |
76 | 1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000, | |
77 | 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000, | |
78 | 2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000, | |
79 | 2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000, | |
80 | 2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000, | |
81 | }; | |
82 | ||
83 | static const unsigned int BUCK3_table[] = { | |
84 | 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000, | |
85 | 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000, | |
86 | 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000, | |
87 | 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000, | |
88 | 800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000, | |
89 | 1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000, | |
90 | 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000, | |
91 | 1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000, | |
92 | }; | |
93 | ||
94 | static const unsigned int BUCK3_suspend_table[] = { | |
95 | 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000, | |
96 | 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000, | |
97 | 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000, | |
98 | 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000, | |
99 | 800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000, | |
100 | 1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000, | |
101 | 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000, | |
102 | 1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000, | |
103 | }; | |
104 | ||
105 | static const unsigned int LDO1_table[] = { | |
106 | 1800000, 1200000, 2800000, 0, | |
107 | }; | |
108 | ||
109 | static const unsigned int LDO1_suspend_table[] = { | |
110 | 1800000, 1200000, 0, 0, | |
111 | }; | |
112 | ||
113 | static const unsigned int LDO2_table[] = { | |
114 | 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000, | |
115 | }; | |
116 | ||
117 | static const unsigned int LDO2_suspend_table[] = { | |
118 | 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, | |
119 | }; | |
120 | ||
121 | static const unsigned int LDO3_table[] = { | |
122 | 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000, | |
123 | }; | |
124 | ||
125 | static const unsigned int LDO3_suspend_table[] = { | |
126 | 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, | |
127 | }; | |
128 | ||
129 | static const unsigned int LDO4_table[] = { | |
130 | 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 3300000, | |
131 | }; | |
132 | ||
133 | static const unsigned int LDO4_suspend_table[] = { | |
134 | 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 2900000, | |
135 | }; | |
136 | ||
137 | static const unsigned int LDO5_table[] = { | |
138 | 2900000, 3000000, 3100000, 3300000, | |
139 | }; | |
140 | ||
141 | static const unsigned int LDO5_suspend_table[] = { | |
142 | 2900000, 0, 0, 0, | |
143 | }; | |
144 | ||
145 | static const unsigned int LDO6_table[] = { | |
146 | 1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 3300000, | |
147 | }; | |
148 | ||
149 | static const unsigned int LDO6_suspend_table[] = { | |
150 | 1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 2900000, | |
151 | }; | |
152 | ||
153 | static const unsigned int LDO7_table[] = { | |
154 | 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, | |
155 | }; | |
156 | ||
157 | static const unsigned int LDO7_suspend_table[] = { | |
158 | 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, | |
159 | }; | |
160 | ||
161 | static const unsigned int LDO8_table[] = { | |
162 | 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, | |
163 | }; | |
164 | ||
165 | static const unsigned int LDO8_suspend_table[] = { | |
166 | 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, | |
167 | }; | |
168 | ||
169 | static const unsigned int LDO9_table[] = { | |
170 | 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000, | |
171 | }; | |
172 | ||
173 | static const unsigned int LDO9_suspend_table[] = { | |
174 | 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, | |
175 | }; | |
176 | ||
177 | static const unsigned int LDO10_table[] = { | |
178 | 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000, | |
179 | 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, | |
180 | }; | |
181 | ||
182 | static const unsigned int LDO10_suspend_table[] = { | |
183 | 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, | |
184 | 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, | |
185 | }; | |
186 | ||
187 | static const unsigned int LDO12_table[] = { | |
188 | 1800000, 1900000, 2700000, 2800000, 2900000, 3000000, 3100000, 3300000, | |
189 | 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, | |
190 | }; | |
191 | ||
192 | static const unsigned int LDO12_suspend_table[] = { | |
193 | 1800000, 1900000, 2700000, 2800000, 2900000, 2900000, 2900000, 2900000, | |
194 | 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, | |
195 | }; | |
196 | ||
197 | static const unsigned int LDO13_table[] = { | |
198 | 1300000, 1800000, 2000000, 2500000, 2800000, 3000000, 0, 0, | |
199 | }; | |
200 | ||
201 | static const unsigned int LDO13_suspend_table[] = { | |
202 | 0, | |
203 | }; | |
204 | ||
205 | static const unsigned int LDO14_table[] = { | |
206 | 1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 3300000, | |
207 | }; | |
208 | ||
209 | static const unsigned int LDO14_suspend_table[] = { | |
210 | 1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 2900000, | |
211 | }; | |
be0e2d3e HZ |
212 | |
213 | static int pm8607_list_voltage(struct regulator_dev *rdev, unsigned index) | |
214 | { | |
215 | struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); | |
be0e2d3e HZ |
216 | int ret = -EINVAL; |
217 | ||
d06563cb | 218 | if (info->vol_table && (index < (1 << info->vol_nbits))) { |
9f79e9db | 219 | ret = info->vol_table[index]; |
be0e2d3e HZ |
220 | if (info->slope_double) |
221 | ret <<= 1; | |
be0e2d3e HZ |
222 | } |
223 | return ret; | |
224 | } | |
225 | ||
226 | static int choose_voltage(struct regulator_dev *rdev, int min_uV, int max_uV) | |
227 | { | |
228 | struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); | |
9f79e9db | 229 | int i, ret = -ENOENT; |
be0e2d3e | 230 | |
9f79e9db HZ |
231 | if (info->slope_double) { |
232 | min_uV = min_uV >> 1; | |
233 | max_uV = max_uV >> 1; | |
be0e2d3e | 234 | } |
9f79e9db | 235 | if (info->vol_table) { |
d06563cb | 236 | for (i = 0; i < (1 << info->vol_nbits); i++) { |
9f79e9db HZ |
237 | if (!info->vol_table[i]) |
238 | break; | |
239 | if ((min_uV <= info->vol_table[i]) | |
240 | && (max_uV >= info->vol_table[i])) { | |
241 | ret = i; | |
242 | break; | |
243 | } | |
be0e2d3e | 244 | } |
9f79e9db HZ |
245 | } |
246 | if (ret < 0) | |
247 | pr_err("invalid voltage range (%d %d) uV\n", min_uV, max_uV); | |
248 | return ret; | |
be0e2d3e HZ |
249 | } |
250 | ||
251 | static int pm8607_set_voltage(struct regulator_dev *rdev, | |
252 | int min_uV, int max_uV) | |
253 | { | |
254 | struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); | |
be0e2d3e HZ |
255 | uint8_t val, mask; |
256 | int ret; | |
257 | ||
9f79e9db | 258 | if (min_uV > max_uV) { |
be0e2d3e HZ |
259 | pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV); |
260 | return -EINVAL; | |
261 | } | |
262 | ||
263 | ret = choose_voltage(rdev, min_uV, max_uV); | |
264 | if (ret < 0) | |
265 | return -EINVAL; | |
266 | val = (uint8_t)(ret << info->vol_shift); | |
267 | mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; | |
268 | ||
53dbab7a | 269 | ret = pm860x_set_bits(info->i2c, info->vol_reg, mask, val); |
be0e2d3e HZ |
270 | if (ret) |
271 | return ret; | |
272 | switch (info->desc.id) { | |
273 | case PM8607_ID_BUCK1: | |
274 | case PM8607_ID_BUCK3: | |
53dbab7a | 275 | ret = pm860x_set_bits(info->i2c, info->update_reg, |
be0e2d3e HZ |
276 | 1 << info->update_bit, |
277 | 1 << info->update_bit); | |
278 | break; | |
279 | } | |
280 | return ret; | |
281 | } | |
282 | ||
283 | static int pm8607_get_voltage(struct regulator_dev *rdev) | |
284 | { | |
285 | struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); | |
be0e2d3e HZ |
286 | uint8_t val, mask; |
287 | int ret; | |
288 | ||
53dbab7a | 289 | ret = pm860x_reg_read(info->i2c, info->vol_reg); |
be0e2d3e HZ |
290 | if (ret < 0) |
291 | return ret; | |
292 | ||
293 | mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; | |
294 | val = ((unsigned char)ret & mask) >> info->vol_shift; | |
295 | ||
296 | return pm8607_list_voltage(rdev, val); | |
297 | } | |
298 | ||
299 | static int pm8607_enable(struct regulator_dev *rdev) | |
300 | { | |
301 | struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); | |
be0e2d3e | 302 | |
53dbab7a | 303 | return pm860x_set_bits(info->i2c, info->enable_reg, |
be0e2d3e HZ |
304 | 1 << info->enable_bit, |
305 | 1 << info->enable_bit); | |
306 | } | |
307 | ||
308 | static int pm8607_disable(struct regulator_dev *rdev) | |
309 | { | |
310 | struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); | |
be0e2d3e | 311 | |
53dbab7a | 312 | return pm860x_set_bits(info->i2c, info->enable_reg, |
be0e2d3e HZ |
313 | 1 << info->enable_bit, 0); |
314 | } | |
315 | ||
316 | static int pm8607_is_enabled(struct regulator_dev *rdev) | |
317 | { | |
318 | struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); | |
be0e2d3e HZ |
319 | int ret; |
320 | ||
53dbab7a | 321 | ret = pm860x_reg_read(info->i2c, info->enable_reg); |
be0e2d3e HZ |
322 | if (ret < 0) |
323 | return ret; | |
324 | ||
325 | return !!((unsigned char)ret & (1 << info->enable_bit)); | |
326 | } | |
327 | ||
328 | static struct regulator_ops pm8607_regulator_ops = { | |
329 | .set_voltage = pm8607_set_voltage, | |
330 | .get_voltage = pm8607_get_voltage, | |
331 | .enable = pm8607_enable, | |
332 | .disable = pm8607_disable, | |
333 | .is_enabled = pm8607_is_enabled, | |
334 | }; | |
335 | ||
9f79e9db | 336 | #define PM8607_DVC(vreg, nbits, ureg, ubit, ereg, ebit) \ |
be0e2d3e HZ |
337 | { \ |
338 | .desc = { \ | |
9f79e9db | 339 | .name = #vreg, \ |
be0e2d3e HZ |
340 | .ops = &pm8607_regulator_ops, \ |
341 | .type = REGULATOR_VOLTAGE, \ | |
9f79e9db | 342 | .id = PM8607_ID_##vreg, \ |
be0e2d3e HZ |
343 | .owner = THIS_MODULE, \ |
344 | }, \ | |
be0e2d3e HZ |
345 | .vol_reg = PM8607_##vreg, \ |
346 | .vol_shift = (0), \ | |
347 | .vol_nbits = (nbits), \ | |
348 | .update_reg = PM8607_##ureg, \ | |
349 | .update_bit = (ubit), \ | |
350 | .enable_reg = PM8607_##ereg, \ | |
351 | .enable_bit = (ebit), \ | |
352 | .slope_double = (0), \ | |
9f79e9db HZ |
353 | .vol_table = (unsigned int *)&vreg##_table, \ |
354 | .vol_suspend = (unsigned int *)&vreg##_suspend_table, \ | |
be0e2d3e HZ |
355 | } |
356 | ||
9f79e9db | 357 | #define PM8607_LDO(_id, vreg, shift, nbits, ereg, ebit) \ |
be0e2d3e HZ |
358 | { \ |
359 | .desc = { \ | |
360 | .name = "LDO" #_id, \ | |
361 | .ops = &pm8607_regulator_ops, \ | |
362 | .type = REGULATOR_VOLTAGE, \ | |
363 | .id = PM8607_ID_LDO##_id, \ | |
364 | .owner = THIS_MODULE, \ | |
365 | }, \ | |
be0e2d3e HZ |
366 | .vol_reg = PM8607_##vreg, \ |
367 | .vol_shift = (shift), \ | |
368 | .vol_nbits = (nbits), \ | |
369 | .enable_reg = PM8607_##ereg, \ | |
370 | .enable_bit = (ebit), \ | |
371 | .slope_double = (0), \ | |
9f79e9db HZ |
372 | .vol_table = (unsigned int *)&LDO##_id##_table, \ |
373 | .vol_suspend = (unsigned int *)&LDO##_id##_suspend_table, \ | |
be0e2d3e HZ |
374 | } |
375 | ||
376 | static struct pm8607_regulator_info pm8607_regulator_info[] = { | |
9f79e9db HZ |
377 | PM8607_DVC(BUCK1, 6, GO, 0, SUPPLIES_EN11, 0), |
378 | PM8607_DVC(BUCK2, 6, GO, 1, SUPPLIES_EN11, 1), | |
379 | PM8607_DVC(BUCK3, 6, GO, 2, SUPPLIES_EN11, 2), | |
380 | ||
381 | PM8607_LDO( 1, LDO1, 0, 2, SUPPLIES_EN11, 3), | |
382 | PM8607_LDO( 2, LDO2, 0, 3, SUPPLIES_EN11, 4), | |
383 | PM8607_LDO( 3, LDO3, 0, 3, SUPPLIES_EN11, 5), | |
384 | PM8607_LDO( 4, LDO4, 0, 3, SUPPLIES_EN11, 6), | |
385 | PM8607_LDO( 5, LDO5, 0, 2, SUPPLIES_EN11, 7), | |
386 | PM8607_LDO( 6, LDO6, 0, 3, SUPPLIES_EN12, 0), | |
387 | PM8607_LDO( 7, LDO7, 0, 3, SUPPLIES_EN12, 1), | |
388 | PM8607_LDO( 8, LDO8, 0, 3, SUPPLIES_EN12, 2), | |
389 | PM8607_LDO( 9, LDO9, 0, 3, SUPPLIES_EN12, 3), | |
390 | PM8607_LDO(10, LDO10, 0, 3, SUPPLIES_EN12, 4), | |
391 | PM8607_LDO(12, LDO12, 0, 4, SUPPLIES_EN12, 5), | |
392 | PM8607_LDO(13, VIBRATOR_SET, 1, 3, VIBRATOR_SET, 0), | |
393 | PM8607_LDO(14, LDO14, 0, 4, SUPPLIES_EN12, 6), | |
be0e2d3e HZ |
394 | }; |
395 | ||
396 | static inline struct pm8607_regulator_info *find_regulator_info(int id) | |
397 | { | |
398 | struct pm8607_regulator_info *info; | |
399 | int i; | |
400 | ||
401 | for (i = 0; i < ARRAY_SIZE(pm8607_regulator_info); i++) { | |
402 | info = &pm8607_regulator_info[i]; | |
403 | if (info->desc.id == id) | |
404 | return info; | |
405 | } | |
406 | return NULL; | |
407 | } | |
408 | ||
409 | static int __devinit pm8607_regulator_probe(struct platform_device *pdev) | |
410 | { | |
53dbab7a HZ |
411 | struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent); |
412 | struct pm860x_platform_data *pdata = chip->dev->platform_data; | |
be0e2d3e HZ |
413 | struct pm8607_regulator_info *info = NULL; |
414 | ||
415 | info = find_regulator_info(pdev->id); | |
416 | if (info == NULL) { | |
417 | dev_err(&pdev->dev, "invalid regulator ID specified\n"); | |
418 | return -EINVAL; | |
419 | } | |
420 | ||
53dbab7a | 421 | info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion; |
be0e2d3e HZ |
422 | info->chip = chip; |
423 | ||
424 | info->regulator = regulator_register(&info->desc, &pdev->dev, | |
425 | pdata->regulator[pdev->id], info); | |
426 | if (IS_ERR(info->regulator)) { | |
427 | dev_err(&pdev->dev, "failed to register regulator %s\n", | |
428 | info->desc.name); | |
429 | return PTR_ERR(info->regulator); | |
430 | } | |
431 | ||
432 | /* check DVC ramp slope double */ | |
433 | if (info->desc.id == PM8607_ID_BUCK3) | |
434 | if (info->chip->buck3_double) | |
435 | info->slope_double = 1; | |
436 | ||
437 | platform_set_drvdata(pdev, info); | |
438 | return 0; | |
439 | } | |
440 | ||
441 | static int __devexit pm8607_regulator_remove(struct platform_device *pdev) | |
442 | { | |
443 | struct pm8607_regulator_info *info = platform_get_drvdata(pdev); | |
444 | ||
192bbb95 | 445 | platform_set_drvdata(pdev, NULL); |
be0e2d3e HZ |
446 | regulator_unregister(info->regulator); |
447 | return 0; | |
448 | } | |
449 | ||
192bbb95 HZ |
450 | static struct platform_driver pm8607_regulator_driver = { |
451 | .driver = { | |
452 | .name = "88pm860x-regulator", | |
453 | .owner = THIS_MODULE, | |
454 | }, | |
455 | .probe = pm8607_regulator_probe, | |
456 | .remove = __devexit_p(pm8607_regulator_remove), | |
be0e2d3e HZ |
457 | }; |
458 | ||
459 | static int __init pm8607_regulator_init(void) | |
460 | { | |
192bbb95 | 461 | return platform_driver_register(&pm8607_regulator_driver); |
be0e2d3e HZ |
462 | } |
463 | subsys_initcall(pm8607_regulator_init); | |
464 | ||
465 | static void __exit pm8607_regulator_exit(void) | |
466 | { | |
192bbb95 | 467 | platform_driver_unregister(&pm8607_regulator_driver); |
be0e2d3e HZ |
468 | } |
469 | module_exit(pm8607_regulator_exit); | |
470 | ||
471 | MODULE_LICENSE("GPL"); | |
472 | MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>"); | |
473 | MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM8607 PMIC"); | |
474 | MODULE_ALIAS("platform:88pm8607-regulator"); |